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Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6381883118

Certificate GIA 6381883118

Diamond specifications and retailer prices

From £1,911 GBP
As of November 6, 2026
Save £2,489 GBP (57%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,400 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6381883118. Listed at 23 retailers as of November 5, 2026, with prices from £1,911 to £4,400, a £2,489 spread on the same certified stone. NZ Jewellers lists it at £4,400. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6381883118
Dimensions6.42 × 6.39 × 4.03 mm
L/W Ratio1.00
Top View
6.42 mm6.39 mm1.01 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6381883118
Side View
Table 56.0%Crown 36.5°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,400 GBP|Low: £1,892 GBP|High: £4,400 GBP|Avg: £2,724 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 5, 2026
Retailer 19£1,911 GBP
Retailer 22£1,982 GBP
Retailer 5£1,990 GBP
Retailer 20£2,022 GBP
Retailer 11£2,093 GBP
Retailer 6£2,111 GBP
Retailer 8£2,225 GBP
Retailer 7£2,288 GBP
Retailer 12£2,288 GBP
Retailer 3£2,337 GBP
Retailer 10£2,376 GBP
Retailer 16£2,597 GBP
Retailer 9£2,600 GBP
Retailer 14£2,600 GBP
Retailer 21£2,640 GBP
Retailer 4£2,690 GBP
Retailer 13£2,756 GBP
Retailer 15£2,766 GBP
Retailer 2£3,083 GBP
Retailer 17£3,645 GBP
Retailer 18£4,223 GBP
NZ Jewellers£4,400 GBP

37 data points across 22 retailers

23 retailers£1,911 GBP to £4,400 GBP

A
Cheapest Retailer
-
£1,911 GBP
A
Retailer 2
-
£1,982 GBP
View
A
Retailer 3
-
£1,990 GBP
View
A
Retailer 4
-
£2,022 GBP
View
A
Retailer 5
-
£2,093 GBP
View
Final sale: no returns
A
Retailer 6
-
£2,111 GBP
View
A
Retailer 7
-
£2,225 GBP
View
B+
Retailer 8
-
£2,288 GBP
View
Retailer 9
-
£2,288 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£2,337 GBP
View
B+
Retailer 11
-
£2,376 GBP
View
B+
Retailer 12
-
£2,597 GBP
View
B+
Retailer 13
-
£2,600 GBP
View
B+
Retailer 14
-
£2,600 GBP
View
B+
Retailer 15
-
£2,640 GBP
View
B+
Retailer 16
-
£2,690 GBP
View
B+
Retailer 17
-
£2,756 GBP
View
Retailer 18
-
£2,766 GBP
View
Price last confirmed 33 days ago
Retailer 19
-
£2,924 GBP
View
Price last confirmed 14 days ago
B+
Retailer 20
-
£3,083 GBP
View
B
Retailer 21
-
£3,645 GBP
View
B
Retailer 22
-
£4,223 GBP
View
Most Expensive
B
NZ Jewellers
4ded0bb0-e781-46f5-b318-40d8cc921597 · Nov 5
£4,400 GBP
$5,922 USD
View
22 more retailers have this diamond
Prices start from £1,911 GBPSave up to £2,489 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.01ct Round
£1,911 GBP